query: SELECT name FROM stadium WHERE stadium_id NOT IN (SELECT stadium_id FROM concert)
question: Showing a stadium name any a concert.
query_toks: SELECT name FROM stadium WHERE stadium_id NOT IN ( SELECT stadium_id FROM concert )
query_toks_no_value: select name from stadium where stadium_id not in ( select stadium_id from concert )
question_toks: Showing a stadium name any a concert.